knock

noun

1
the act of hitting vigorously
he gave the table a whack
2
negative criticism
3
a bad experience
the school of hard knocks
4
the sound of knocking (as on a door or in an engine or bearing)
the knocking grew louder
5
a vigorous blow
the sudden knock floored him
he took a bash right in his face

1
find fault with; express criticism of; point out real or perceived flaws
The paper criticized the new movie
Don't knock the food--it's free
2
deliver a sharp blow or push :"He knocked the glass clear across the room"
3
knock against with force or violence
My car bumped into the tree
4
rap with the knuckles
knock on the door
5
sound like a car engine that is firing too early
the car pinged when I put in low-octane gasoline
The car pinked when the ignition was too far retarded
6
make light, repeated taps on a surface
he was tapping his fingers on the table impatiently

Also useful for “knock”:Wordle Solver— Five letters — perfect Wordle material